Physical Properties
Ca5(PO4)3
Hardness = 4;
Crystals hexagonal short to long prismatic; often massive
Green, brown, yellow, red, etc.
Cleavage: one poor across prism
Luster: greasy, vitreous (glassy),
transparent to transluscent
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Description
Looking down the axis of the hexagonal prismatic apatite crystal. Note that some sides are flat with sharp corners, but others are rounded and indistinct. This is typical.
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